Printable Version of Topic

Posted by: Phil Stooke Oct 12 2022, 06:42 PM

ispace (they don't capitalize the 'i') is a Japanese company which was associated with the old Google Lunar X Prize team Hakuto, which evolved from the original White Label Space GLXP team. It raised substantial funding and carried on after the demise of GLXP. The useful part of their website is:

https://ispace-inc.com/project/

They have a multi-mission project called HAKUTO-R (R for 'reboot', a revival of the GLXP team) and the first lander is built, tested and about to be shipped to Florida for a SpaceX launch in mid-November. It carries a rover called Rashid from the UAE and contributions from Canada as well as a Japanese rover. See this press release:

https://ispace-inc.com/news/?p=2370


ispace's US subsidiary is associated with the Draper CLPS mission to Schrodinger basin, recently awarded, which will utilize a new lander from ispace larger than the Mission 1 lander.

The landing site was said to be in Lacus Somniorum north of Mare Serenitatis, but recent reports say it has moved to Atlas crater nearby - whether in or near the crater I don't know.

Launch is set for mid-November.

Posted by: Phil Stooke Oct 31 2022, 08:56 PM

The spacecraft is now in Florida with a launch on or after 22 November. Lunar Flashlight, the cubesat which was not ready for launch on Artemis 1 and had to look for an alternative ride to space is apparently sharing this launch. Earlier it was said to be going with Intuitive Machines' first CLPS mission, now set to launch in March.

Phil

Posted by: Phil Stooke Nov 17 2022, 08:28 AM

A press release from ispace:

https://www.ispace-inc.com/news-en/?p=3939

It gives a launch date, 28 November, and a landing site which is on the northern floor of the crater Atlas. It should have spectacular views of the massive terraced crater walls above the lander.

Phil

Posted by: Thorsten Denk Nov 28 2022, 08:13 PM

Launch is now scheduled for Wednesday November 30, at 08:39 UTC.
Arrival at the Moon I'm not sure, about 4 months later or so.
Thorsten

Posted by: Thorsten Denk Dec 1 2022, 09:14 AM

Not yet...

"SpaceX is expected to roll a Falcon 9 rocket back into its hangar at Cape Canaveral for troubleshooting, postponing the planned launch of a Japanese commercial moon lander for an unspecified period. SpaceX provided no details about the reason for grounding the rocket."

https://spaceflightnow.com/2022/11/30/spacex-rocket-trouble-postpones-japanese-moon-lander-launch/

Thorsten

Posted by: Antdoghalo Dec 10 2022, 06:54 PM

Launch is scheduled at 2:38 AM Eastern on the 11th.

Posted by: Antdoghalo Dec 11 2022, 07:50 AM

It just launched on its way to the moon.

Posted by: Phil Stooke Dec 15 2022, 01:54 AM

https://ispace-inc.com/news-en/?p=4161

Nice images from the spacecraft and good news so far on flight operations.

Phil

Posted by: Thorsten Denk Dec 15 2022, 09:10 AM

In the launch video from SpaceX you can see how the landing legs unfold.
Quite cute!
https://www.youtube.com/watch?v=UaaF0IgzGSI&t=4057s

Thorsten

Posted by: Phil Stooke Mar 1 2023, 04:19 AM

This mission is still in flight on its long cruise. It will soon begin to ease itself into a lunar approach orbit, and then into lunar orbit, with a landing attempt late in April. The mission team release informative press releases here:

https://ispace-inc.com/news-en

Look for some Moon images coming up during March and April.

Phil

Posted by: Phil Stooke Mar 16 2023, 12:42 AM

https://twitter.com/ispace_inc/status/1635950296395579394

Getting closer... dust off the old camera!

Phil

Posted by: Phil Stooke Mar 18 2023, 06:27 AM

https://ispace-inc.com/news-en/?p=4440

Press release, only a few days (maybe up to a week) before lunar orbit insertion.

Phil

Posted by: Thorsten Denk Mar 21 2023, 01:17 PM

Lunar Orbit Insertion complete!
https://ispace-inc.com/news-en/?p=4460

Thorsten

Posted by: Phil Stooke Mar 24 2023, 12:14 AM

Here is a nice french-language site on the landing area.

Phil

https://cnes.fr/fr/rover-rashid-une-cooperation-internationale-au-service-de-la-science

Posted by: Thorsten Denk Mar 24 2023, 04:03 PM

First time I see a landing date.
They write 23 of April!
Thorsten

Posted by: climber Mar 24 2023, 07:43 PM

Thanks for the link Phil, I’ll closely follow the mission now and report eventually.
I discovered that I know Evelyn who I met back in 2019 in Zurich at the Starmus festival. You might also know her since she normally get to LPSC. I learnt that she knows Jack Schmitt and I feel that she doesn’t always share all his conclusions about Taurus Littrow
Anyway, I’m going to write her, we’ll see.
Another quite funny story this time is about Francis Rocard. Olivier invited me, back in 2014, to attempt Philae landing in Paris with the scientists and members of the government. At the same time, I was following the landing also on UNMSF and somebody, cannot remember who, came up with a solution regarding where Philae has landed. Afterwards, I ran into Francis Rocard in the underground and told him, very excited, that I knew where was the probe but… fortunately ( ) couldn’t connect my cell phone.

Posted by: Phil Stooke Mar 25 2023, 12:02 AM

"First time I see a landing date.
They write 23 of April!
Thorsten "

Other sources have said 25 April. When I look at the sunrise at Atlas crater, 25 April looks more likely. I think they want to do image-based navigation and hazard avoidance, so they need to land when the Sun is a bit higher than sunrise itself. But we will see. There is also the question of whether the date is Universal time or Japan time, nearly half a day apart.

Phil

Posted by: Thorsten Denk Mar 25 2023, 03:05 PM

Interesting. Thanks Phil!
Thorsten

Posted by: Phil Stooke Mar 27 2023, 07:25 PM

https://twitter.com/ispace_inc/status/1640305097845481473

ispace tweets its first image of the Moon from its lander camera. It shows Langrenus crater and Mare Fecunditatis, south up as posted.

Phil

Posted by: Phil Stooke Mar 28 2023, 10:42 PM

Another image, this time the far side, from the company which built the camera.

Phil

https://www.canadensys.com/canadensys-aerospace-lunar-imaging-system-captures-moon-from-lunar-orbit/

Posted by: Phil Stooke Apr 6 2023, 07:22 AM

https://www.spacelaunchschedule.com/space-events/hakuto-r-m1-lunar-landing/

This website says the Hakuto-R mission 1 landing will be on the 29th of this month. I don't know where that comes from, but it is 4 days after sunrise, which seems a bit late to me.

Phil


(PS tip for anyone who doesn't know this - you can visualize the location of the lunar terminator on Quickmap by choosing to show the overlay 'sunlit region' and then selecting any date or time you want)

Posted by: Phil Stooke Apr 12 2023, 02:21 AM

https://ispace-inc.com/news-en/?p=4577

Press release from ispace regarding landing. The first date is April 25th (16:40 UTC) in Atlas crater.

If there are delays there are three backup sites: Lacus Somniorum, Sinus Iridum and a site near the Mairan Domes not far from Chang'e 5, in northern Oceanus Procellarum. Landing dates at those locations occur as they rotate under the orbit plane, on April 26, May 1 and May 3 respectively.

Phil

Posted by: Phil Stooke Apr 20 2023, 06:37 AM

https://twitter.com/ispace_inc/status/1648860477093494784

A tweet from ispace with another image of the Moon from orbit. It shows Mare Fecunditatis, like the first image we saw. In fact, it is the first image with two additional frames added, one on each side, to make a wider view.

Phil

Posted by: Phil Stooke Apr 23 2023, 08:19 PM

https://twitter.com/akaschs/status/1650226399456940033

Landing update with viewing information.

"HAKUTO-R M1 webcast starts at 11:00 a.m. EDT, Tue April 25.
Landing sequence starts at 10:40 a.m. EDT."

https://www.youtube.com/watch?v=CpR1UUnix3g

Phil

Posted by: Phil Stooke Apr 23 2023, 08:34 PM

Here are some maps of the landing site and backup sites. Keep in mind that the prime site with its 8 km landing ellipse is accurate but the backup sites (which should also be 8 km across) are only approximately located here - exact locations not yet available.

Originally GLXP Team Hakuto planned its own lander, but they dropped it and chose to fly their small rover 'Sorato' on Astrobotic's GLXP mission, which was then targeted at a collapse pit or skylight in Lacus Mortis. After GLXP ended without a winner, Hakuto was 'rebooted' as HAKUTO-R (capitalized in most publications, but it is not an acronym). At first they kept the same Lacus Mortis landing site, before moving to Lacus Somniorum and then Atlas crater.


Phil

Posted by: Phil Stooke Apr 24 2023, 06:36 PM

https://twitter.com/ispace_inc/status/1650506233575604227

Earthrise during the 20 April solar eclipse.

https://twitter.com/ispace_inc/status/1650408608197390336

Oblique view across Leibnitz crater, central far side. This is apparently the target of the Chang'e 6 sample return mission.

Phil

Posted by: Explorer1 Apr 25 2023, 03:05 PM

https://www.youtube.com/watch?v=CpR1UUnix3g

Posted by: Hungry4info Apr 25 2023, 03:37 PM

Stream has started.

Posted by: Hungry4info Apr 25 2023, 03:47 PM

Deorbit burn is expected to have occurred by now. Currently behind the lunar farside and will regain contact in 30 min if nominal de-orbit burn.

Posted by: Hungry4info Apr 25 2023, 04:31 PM

Contact re-established. Just a few minutes away from landing.

Posted by: Hungry4info Apr 25 2023, 04:36 PM

They just showed a couple videos - one looking down at the surface during orbit and another looking at Earth over the lunar limb. Both taken before, rather than live.

Posted by: Hungry4info Apr 25 2023, 04:40 PM

1 km to go.

Posted by: Explorer1 Apr 25 2023, 04:43 PM

Live updates cut out at around .18 km, 54 km/h (went to simulation right after that). Now waiting for any telemetry.

Posted by: Hungry4info Apr 25 2023, 04:43 PM

We're supposed to have landed a minute or so ago, awaiting confirmation... but it's taking a while.

Posted by: Hungry4info Apr 25 2023, 04:48 PM

A number of concerned expressions in the mission control room before cutting to a commercial break.

Posted by: Steve G Apr 25 2023, 04:49 PM

My wife and I were watching it and you could see it coming down really fast compared to the rapidly decreasing altitude. Fingers crossed.

Posted by: tolis Apr 25 2023, 04:51 PM

Landing on the Moon is hard.

Posted by: Explorer1 Apr 25 2023, 04:56 PM

Just like India and Israel, everything fine until the last minute....

Posted by: marsbug Apr 25 2023, 04:57 PM

I'm keeping everything crossed. The last confirmed velocity was 54km / hour, which is about 15 meters / second. How much chance there still was to get that down from the 0.18 km altitude depends on the angle of attack - but it must have all played out fast.

Posted by: tolis Apr 25 2023, 05:04 PM

Some commentary on spaceflightnow.com https://spaceflightnow.com/2023/04/25/ispace-mission-1-landing-mission-status-center/

Posted by: Explorer1 Apr 25 2023, 05:09 PM

Missions 2 and 3 will continue, they say. Important lessons will be learned!

Regardless, LRO will tell soon enough.

Posted by: dtolman Apr 25 2023, 05:11 PM

Update from mission control. The engineers look really depressed on the +25 minute status update from the Mission Controllers, and acknowledge it may be a failure. They will have at least 2 future missions, and they will use the telemetry they received until its last few seconds of flight to improve their processes.

--
Judging by the last few images of telemetry, its looking likely that it was a hard landing at higher than expected speeds.
We may not know its status until an orbiter can take an image of the landing site. I'm guessing mostly intact, but that impacting the surface at near 25 mph/40 kph was too much for the craft to function.

Posted by: marsbug Apr 25 2023, 05:15 PM

On the spacenews feed it mentions that, tentatively, at 90 meters the lander was dropping at 33 km/ hour. The previous numbers were 54km/hour at 180 meters altitude. OK... this is little better than reading entrail I realise, but if, for the sake of argument, we take these as more-or-less accurate the lander would have reached 0 meters with a velocity of just under 2 meters/sec.

This makes no account of whether the numbers are just vertical drop rate or overall velocity, or angle of descent. I just wanted to illustrate that they ispace team may not have been too far off the mark with their landing.

Posted by: marsbug Apr 25 2023, 05:23 PM

From the spacenews feed.

Posted by: Webscientist Apr 25 2023, 05:50 PM

Great emotional moments !
The third time I watched a landing attempt on the Moon. I had watched the landing attempt of the indian probe Chandrayaan-2 and the landing attempt of the israeli probe Beresheet and each time a crash !
The deceleration of the probe at the end of the vertical descent is impressive. The error margin seems very limited for the acceptable speed at the end of the descent process.


Thanks to iSpace for the great presentation !

Posted by: marsbug Apr 25 2023, 05:51 PM

Seconded - well done to the team! I'm still expecting that it will be down in one piece, just a bit too hard to work as planned.

Posted by: tolis Apr 25 2023, 05:59 PM

The way I understand these landings, guidance brings you a few meters above the surface with zero horizontal & vertical velocity and with the landing legs pointed down. Then you free-fall to the surface. If any of these three conditions are not met, you most likely crash. Or there was a thruster malfunction
in the last few moments when there is precious little margin for guidance to recover the situation.

Actually, I am slightly surprised by how fast the team appears to have thrown down the towel. It could be that they saw trouble in the last telemetry packets
and the loss of signal just came to confirm what they expected. Hopefully we will find out soon.

Posted by: Phil Stooke Apr 25 2023, 06:56 PM

Sad news. So in the 21st Century it is China 3/3, rest of the world 0/3. Let's hope for more success later in the year.

Phil

Posted by: Phil Stooke Apr 25 2023, 08:15 PM

The livestream included an animated simulation of the landing over a contour map of the landing site. Assuming it accurately represented the planned landing, it gives a target point at the black dot here:

Using low sun angle LROC NAC images, it looks like this:



Quite a rough surface (though of course the long shadows exaggerate the roughness).

I'm seeing hints from radio enthusiasts that there might have been a landing plus a bounce as if thrusters didn't cut off properly (as with Surveyor 3) or some other fault at the point of landing.

https://twitter.com/uhf_satcom/status/1650921508728975361

Phil

Posted by: kenny Apr 26 2023, 10:02 AM

Sad news to see this third failure of 3 different landing technologies (including Israel and India).
Only goes to enhance one's appreciation of the Chinese landing system, which worked 3 times in a row.

Posted by: Explorer1 Apr 26 2023, 01:44 PM

At least ispace was a softer sort of hard landing, and they will be making another attempt next year with what they learned from this one.

Even though they all happened at the same stage of of the landing process, the recent failures have all been different vehicles, so there's no data sharing of any kind on investigations to iterate changes from.

Posted by: marsbug Apr 26 2023, 02:45 PM

I am slightly reminded of Philae landing on comet 67P - just slightly. Which is annoying because I don't think it's reasonable, at this point, to hope for any more contact from the lander. However I am still holding out hope that we'll eventually get evidence of the lander being intact, and perhaps (as per Phil Stooke's post above) that it did manage top soft land, but something went wrong afterwards - if that proved to be the case, would this still count as a successful soft landing I wonder? Though that is kinda a semantic discussion, so maybe not appropriate here.

Posted by: Holder of the Two Leashes Apr 26 2023, 03:03 PM

According to https://spaceflightnow.com/2023/04/25/japanese-company-says-commercial-spacecraft-likely-crashed-on-moon-landing-attempt/ on Spaceflight Now, the lander ran out of fuel while still at altitude, and came down hard from at least 90 meters up.

Posted by: Phil Stooke Apr 26 2023, 06:29 PM

Looks like this is becoming the accepted conclusion now. The earlier report I saw about landing and taking off must be a misinterpretation.

Now... does this allow us to calculate a crash site? I haven't seen anything about that yet.

Phil

Posted by: marsbug Apr 26 2023, 06:45 PM

About 17 meter/sec impact velocity, discounting any residual from the descent. Ouch. Edit: The reported (tentatively) rate of drop at 90 meters was 33 km/hour, or about 9 meters a second. So we could be looking at over 26 meters a second on impact - still, well done to the team for getting to 90 meters of the lunar surface and for the hard landing (it's still a landing on the moon!) and all the data returned up to that point. Roll on mission 2!

Posted by: Bill Harris May 10 2023, 09:08 PM

...waiting for LROC imagery.

Posted by: Phil Stooke May 10 2023, 10:24 PM

Yes indeed. There was an image opportunity only a few hours after landing. Presumably the image was taken, but it did not show the impact. Since we don't really know what went wrong in detail, it's not easy for those of us outside the mission to predict where the crash site should be. Did it overshoot the target? Was it off to one side? Perhaps the mission team have given the LROC people an updated target and we will get an image soon. If not a search might take a while.

Phil

Posted by: Phil Stooke May 20 2023, 03:21 PM

Fascinating report here:

https://amsat-dl.org/en/analysis-of-hakuto-r-spacecraft-landing-on-the-moon-2023-apr-25/


The conclusion is that the lander crashed about 99 km north of Atlas crater (depending on the angle of the final descent. This value assumes a vertical fall).

There will be a statement from ispace on 26 May.

Phil

Posted by: Ohsin May 23 2023, 02:42 PM

Impact Site of the HAKUTO-R Mission 1 Lunar Lander.

http://lroc.sese.asu.edu/posts/1302

Posted by: Phil Stooke May 23 2023, 03:30 PM

Not north of the crater as the previous analysis suggested.

Phil

Posted by: mcaplinger May 23 2023, 03:52 PM

With all due respect to AMSAT, I'm not seeing any error bars on their analysis, I'm not sure where they got the orbit data, I don't know what coordinate system they're using, there are some assumptions made, etc, so I wouldn't have assigned very high confidence to their result in the first place.

They do say their result assumes a vertical pitch angle and note "The landing could also have been in Atlas crater but at a pitch angle of -86.7° rather than -90° which is vertical down."

Posted by: Phil Stooke May 23 2023, 08:28 PM

That's right. Scott Tilley also expressed reservations about the analysis:

https://twitter.com/coastal8049/status/1660127118087557126


Phil

Posted by: Explorer1 May 26 2023, 06:45 PM

https://ispace-inc.com/news-en/?p=4691
As usual for the last few (non-China) landings, a software issue...